What powers useful2know.com?
Last seen Jun 2026 · 21 technologies across 13 categories
Advertising
Google AdSense
since Aug 2023
Analytics
Naver Analytics
since Dec 2023
CDN
cdnjs
since Aug 2023
Cloudflare
since Aug 2023
CMS
Cookie compliance
Funding Choices
since Feb 2024
Databases
MySQL
since Jul 2025
Issue trackers
Sentry
since Jan 2025
JavaScript frameworks
JavaScript libraries
Miscellaneous
Programming languages
PHP
since Jul 2025
Security
Tag managers
Google Tag Manager
since Aug 2023
Audience
South Korea
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.10 / 10 · ranked #114,848,264 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.2 s |
| CLS | 0.15 |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Korean
- Weight: 3.4 MB · 116 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| useful2know.com | 20 |
| first.useful2know.com | 15 |
Full technology history →
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Recent changes
- dropped Google Font API May 2026
- detected Google Font API Jan 2026